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Finding the Fourth Proportional to 317,525.71, 438,169.48 and 188,469.82

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Solution

The fourth proportional to 317,525.71, 438,169.48 and 188,469.82 is: 260,078.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,525.71 : 438,169.48 = 188,469.82 : x
  2. Step 2: Convert to fraction form
    317,525.71/438,169.48 = 188,469.82/x
  3. Step 3: Cross multiply
    317,525.71x = 438,169.48 × 188,469.82
  4. Step 4: Simplify right side
    317,525.71x = 82,581,719,891.90
  5. Step 5: Solve for x
    x = 82,581,719,891.90/317,525.71
  6. Step 6: Final answer
    x = 260,078.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.